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曲面xyz=1上平行于x+y+z+3=0的切平面方程是:
分类: 数学2 (军队文职)
发布时间: 2023-11-03 09:29
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曲面xyz=1上平行于x+y+z+3=0的切平面方程是:
A.x+y+z=0
B.x+y+z=1
C.x+y+z=2
D.x+y+z=3
正确答案是D
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